Cheap Flights from Chicago (CHI) to London Heathrow (LHR)

Compare Chicago to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals from Chicago to London Heathrow

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to London Heathrow? Find the lowest prices on one-way and round-trip tickets right here.

Don’t miss a great deal

Stay one step ahead. Find the best value travel with the latest deals, tips and news.

You can unsubscribe at any time. Read our Privacy Policy for more info.

Find the cheapest month to fly from Chicago to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to London Heathrow flights are currently cheapest in January.

Direct flights from Chicago to London Heathrow

Chicago to London Heathrow: Alternative routes

Compare routes from Chicago to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Chicago to London: Flight information

The things to know before you go.
Cheapest flight found$486
Cheapest month to flyOctober
Average flight time7 hrs, 51 mins
Most popular airlineAmerican Airlines
Average flights per week519

Finding cheap flights from Chicago to London Heathrow: Frequently asked questions

The best price we found for a round-trip flight from Chicago to London Heathrow is $486. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
7 hours and 51 minutes is the average flight time from Chicago to London Heathrow.
American Airlines, Iberia and British Airways fly direct from Chicago to London Heathrow.
There are 519 flights per week flying from Chicago to London Heathrow, as of May 2024.
The cheapest month to fly from Chicago to London Heathrow is usually October.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to London Heathrow Airport on Tuesday, October 29, 2024.
Yes – the average flight time is 7 hours and 51 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to London Heathrow is around 40 days in advance, so don’t leave your flight to the last minute.

ORD to LHR Flights Today:

To find the best flight deals from ORD to LHR today, enter your origin city into the search box above and select today’s date. Flexible on your outbound airport? Select “nearby airports” to compare prices from other airports within a 62 mile radius.

Top Tips for Finding Cheap Flights from ORD to LHR:

The secret lies in the flexibility of the dates! Traveling during periods of low season guarantees savings not only in flights, but also in hotels, car rentals and other travel services.

With flexible dates, just follow these three steps to find cheap flights to from ORD to LHR:

  1. Do a search for the cheapest month on our site. In this way, you’ll discover the best time to travel to LHR
  2. Create a price alert to monitor prices. By saving a search on our website and / or travel app, you'll receive emails or push notifications every time the price changes so you can book at the best time.
  3. Search for last minute flight deals. Airlines frequently lower prices at the last minute to fill any remaining seats, so if you're flexible and willing to take a chance, searching last minute might be the way to go!

That's the best way to buy cheap flights from ORD to LHR! Start your search today:

Are there nonstop flights from ORD to LHR?

Want to fly over to London without having to make a stop along the way? Skyscanner can help you find the fastest non-stop flights from ORD to LHR for the cheapest price. We scour the web looking for the best flight deals so you don't have to. Check out these amazing finds:

Direct Flights from ORD to LHR
Airline Airports (From/To) Price*
Finnair Chicago (ORD)/ London (LHR) $615
American Airlines Chicago (ORD)/ London (LHR) $637
British Airways Chicago (ORD)/ London (LHR) $637
Iberia Chicago (ORD)/ London (LHR) $642

*Average lowest prices found in the last 15 days on our site, considering rate estimates and return flights for an adult in the cheapest month. Values subject to availability. Prices change according to the airport of origin and selected date.

What is the Cheapest Month to Fly from ORD to LHR?

September is the cheapest month to fly from ORD to LHR. You can find flights as low as $368 when you book early with Skyscanner!

When is the best time to book flights from ORD to LHR?

To get the best deals available on your flight from ORD to LHR, book your airline flight during the middle of the week and take a red-eye flight if possible. Airline tickets are less in demand during the off-peak hours and days during the work week. The more flexibility you have in your schedule, the more money you will save!

What documents do I need to travel from ORD to LHR?

To enter the United Kingdom, you will need a passport that is valid for the length of your stay. You do not need a tourism visa if you plan to stay less than six months. If you lose your ID while traveling, don't panic, just follow these simple steps. Also keep in mind that the Real ID laws go into effect in 2020; read all about it here.

What are the baggage fees & size restrictions for flights from ORD to LHR?

. Many airlines have done away with the checked baggage fees in an effort to beat out competition for your business. Baggage fees cost approximately $25 dollars, for airlines that do charge the fee, and the average acceptable checked bag size limit is 62”. Check to see if your airline charges a checked bag fee here.

What is the exchange rate when traveling from ORD to LHR?

The Great Brittan Pound (GBP) is the official currency of London and you will get approximately 0.79 GBP for every dollar you exchange. Currency can be exchanged at the airport, at most banks, some national chain hotels, and various currency exchange centers throughout the city.

What is the time difference from ORD to LHR?

When you travel the ORD to LHR route, you will lose six hours. Not to worry, you will gain the time back when you return back to Chicago!

When is the weather best for traveling from ORD to LHR?

May through August are the best months to travel to London as temperatures are in the 60s to 70s throughout most of the summer. During the winter months, you are likely to experience cold temperatures and a lot of rain.

How far is LHR from downtown London?

Downtown London is approximately 17 miles east of LHR. You can travel to the downtown core from the airport in less than 40 minutes during normal traffic conditions.

What are the top things to do in London?

London is one of the top tourist destinations in the world, featuring centuries old palaces, designer label shopping opportunities, fascinating architecture on just about every street. Here are some of the most popular attractions to keep on your radar:

  • Big Ben – The iconic clock tower.
  • Hyde Park – Pristine green space and garden.
  • Warner Bros. Studio Tour – A tour of the set of the Harry Potter movies.
  • Buckingham Palace Tour – Explore the inner walls of the most iconic palace of the UK.
  • Madame Tussauds – Wax figure exhibits of high profile people of the world.

How can I rent a car when I get to London?

Skyscanner makes renting a car easy! Simply use the car rental tool to reserve your vehicle. Skyscanner compares the rates at hundreds of car rental companies to find you the best deals possible. Once you have locked in your reservation, you can pick up your car at the airport or at one of the many car rental facilities in downtown London.

What are the best hotels to stay at in London?

London offers the perfect mix of modern luxuries and old-world charm, and you can find amazing hotels at every price point. Book your room now using Skyscanner’s hotel booking tool to save the most money. Here are some of the most popular hotels in London.

  • Holiday Inn Express London - Croyton from $80 per night
  • Abbey Court Hotel – Hyde Park from $92 per night
  • Dreamtel London Kensington from $139 per night
  • Park Plaza London Waterloo from $164 per night
  • Dorsett City London from $131 per night


More flight options

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.